66550532 has 12 divisors (see below), whose sum is σ = 117235776. Its totient is φ = 33054600.

The previous prime is 66550513. The next prime is 66550537. The reversal of 66550532 is 23505566.

It is not an unprimeable number, because it can be changed into a prime (66550537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54488 + ... + 55695.

It is an arithmetic number, because the mean of its divisors is an integer number (9769648).

Almost surely, 2^66550532 is an apocalyptic number.

It is an amenable number.

66550532 is a deficient number, since it is larger than the sum of its proper divisors (50685244).

66550532 is a wasteful number, since it uses less digits than its factorization.

66550532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110338 (or 110336 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 66550532 is about 8157.8509424970. The cubic root of 66550532 is about 405.2445446849.

The spelling of 66550532 in words is "sixty-six million, five hundred fifty thousand, five hundred thirty-two".